# $Id: base.py 10 2006-06-17 19:41:19Z niels $
#
# Copyright (C) 2006  Niels de Vos
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
#

import os
import re
import sys
import logging
import libomd

class BaseScheduler:
    log = None
    mlog = None

    def __init__(self):
        """ initialize logging """
        if not self.log:
            self.log = logging.getLogger('scheduler')
            if not self.log.handlers:
                self.log.addHandler(logging.StreamHandler(sys.stderr))
        if not self.mlog:
            self.mlog = logging.getLogger('migration')
            if not self.mlog.handlers:
                self.mlog.addHandler(logging.StreamHandler(sys.stderr))
    
    def findProcess(self):
        """ Find a random process, return its PID. """
        pass
    
    def findNode(self, _ni, _ns):
        """ Find a free node, return its IP-address. """
        pass

class BaseAcceptor:
    mlog = None

    def __init__(self):
        if not self.mlog:
            self.mlog = logging.getLogger('migration')
            if not self.mlog.handlers:
                self.mlog.addHandler(logging.StreamHandler(sys.stderr))
    
    def acceptProcess(self, _procStat):
        """ Check if this node (I) can do this process too. """
        pass
